Instructions:In the argos sale booklet (the one with staples in not the big spreadsheet one) there is a voucher redeemable instore for £5 off when you spend £50 or more on video games and pc software.
It is not redeemable online and you have to get the sale booklet to get the voucher but it CAN be used on sale products and CAN be used with multibuy offers but not with console/software bundles or other gift card offers.
You must pay at the till to redeem the voucher, not the quick pay kiosk.

Apologies if already posted or in the wrong place - couldn't find it anywhere but thought it was worth a mention as there are sale games and bundles that are close to this price anyway!